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 $0283-$0284/643-644:   Pointer: Top of Memory for Operating System

   Default Value is $A000

Kernal-Reference:

 LDX $0283   : <A HREF="ROMFE25.HTM">$FE27</A>
 STX $0283   : <A HREF="ROMFE25.HTM">$FE2D</A>

 LDY $0284   : <A HREF="ROMFE25.HTM">$FE2A</A>
 STY $0284   : <A HREF="ROMFE25.HTM">$FE30</A>

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